Calculates finite element data on the actual cell. More...
#include <fe_values.hh>
Inheritance diagram for FEValues< dim, spacedim >:
Collaboration diagram for FEValues< dim, spacedim >:
Public Member Functions | |
| FEValues (Mapping< dim, spacedim > &_mapping, Quadrature< dim > &_quadrature, FiniteElement< dim, spacedim > &_fe, UpdateFlags _flags) | |
| Constructor. More... | |
| void | reinit (ElementFullIter &cell) |
| Update cell-dependent data (gradients, Jacobians etc.) More... | |
 Public Member Functions inherited from FEValuesBase< dim, spacedim > | |
| FEValuesBase () | |
| Default constructor. More... | |
| virtual | ~FEValuesBase () |
| void | allocate (Mapping< dim, spacedim > &_mapping, Quadrature< dim > &_quadrature, FiniteElement< dim, spacedim > &_fe, UpdateFlags flags) |
| Allocates space for computed data. More... | |
| UpdateFlags | update_each (UpdateFlags flags) |
| Determine quantities to be recomputed on each cell. More... | |
| double | shape_value (const unsigned int function_no, const unsigned int point_no) |
Return the value of the function_no-th shape function at the point_no-th quadrature point. More... | |
| arma::vec::fixed< spacedim > | shape_grad (const unsigned int function_no, const unsigned int point_no) |
Return the gradient of the function_no-th shape function at the point_no-th quadrature point. More... | |
| arma::vec::fixed< spacedim > | shape_vector (const unsigned int function_no, const unsigned int point_no) |
Return the value of the function_no-th shape function at the point_no-th quadrature point. More... | |
| arma::mat::fixed< spacedim, spacedim > | shape_grad_vector (const unsigned int function_no, const unsigned int point_no) |
Return the gradient of the function_no-th shape function at the point_no-th quadrature point. More... | |
| double | determinant (const unsigned int point_no) |
| Return the relative volume change of the cell (Jacobian determinant). More... | |
| double | JxW (const unsigned int point_no) |
| Return the product of Jacobian determinant and the quadrature weight at given quadrature point. More... | |
| arma::vec::fixed< spacedim > | point (const unsigned int point_no) |
| Return coordinates of the quadrature point in the actual cell system. More... | |
| vector< arma::vec::fixed< spacedim > > & | point_list () |
| Return coordinates of all quadrature points in the actual cell system. More... | |
| arma::vec::fixed< spacedim > | normal_vector (unsigned int point_no) |
| Returns the normal vector to a side at given quadrature point. More... | |
| unsigned int | n_points () |
| Returns the number of quadrature points. More... | |
| unsigned int | n_dofs () |
| Returns the number of shape functions. More... | |
| Quadrature< dim > * | get_quadrature () const |
| Returns the quadrature in use. More... | |
| FiniteElement< dim, spacedim > * | get_fe () const |
| Returns the finite element in use. More... | |
| Mapping< dim, spacedim > * | get_mapping () const |
| Returns the mapping in use. More... | |
| Public Member Functions inherited from FEValuesSpaceBase< spacedim > | |
| virtual | ~FEValuesSpaceBase () |
Additional Inherited Members | |
| Protected Attributes inherited from FEValuesBase< dim, spacedim > | |
| Mapping< dim, spacedim > * | mapping |
| The mapping from the reference cell to the actual cell. More... | |
| Quadrature< dim > * | quadrature |
| The quadrature rule used to calculate integrals. More... | |
| FiniteElement< dim, spacedim > * | fe |
| The used finite element. More... | |
| MappingInternalData * | mapping_data |
| Precomputed mapping data. More... | |
| FEInternalData * | fe_data |
| Precomputed finite element data. More... | |
| FEValuesData< dim, spacedim > | data |
| Data computed by the mapping and finite element. More... | |
Detailed Description
template<unsigned int dim, unsigned int spacedim>
class FEValues< dim, spacedim >
Calculates finite element data on the actual cell.
FEValues takes care of the calculation of finite element data on the actual cell such as values of shape functions at quadrature points, gradients of shape functions, Jacobians of the mapping from the reference cell etc.
- Parameters
-
dim Dimension of the reference cell. spacedim Dimension of the Euclidean space where the actual cell lives.
Definition at line 416 of file fe_values.hh.
Constructor & Destructor Documentation
template<unsigned int dim, unsigned int spacedim>
| FEValues< dim, spacedim >::FEValues | ( | Mapping< dim, spacedim > & | _mapping, |
| Quadrature< dim > & | _quadrature, | ||
| FiniteElement< dim, spacedim > & | _fe, | ||
| UpdateFlags | _flags | ||
| ) |
Constructor.
Initializes structures and calculates cell-independent data.
- Parameters
-
_mapping The mapping between the reference and actual cell. _quadrature The quadrature rule. _fe The finite element. _flags The update flags.
Definition at line 141 of file fe_values.cc.
Member Function Documentation
template<unsigned int dim, unsigned int spacedim>
| void FEValues< dim, spacedim >::reinit | ( | ElementFullIter & | cell | ) |
Update cell-dependent data (gradients, Jacobians etc.)
- Parameters
-
cell The actual cell.
Definition at line 157 of file fe_values.cc.
Here is the caller graph for this function:
The documentation for this class was generated from the following files:
- /opt/flow123d/flow123d/src/fem/fe_values.hh
- /opt/flow123d/flow123d/src/fem/fe_values.cc
